"4"^^ . "6"^^ . "3"^^ . . "11000.0"^^ . "Juno I"@en . . . "1958-10-23Z"^^ . . . . "21.2"^^ . "The Juno I was a four-stage American booster rocket which launched America's first satellite, Explorer 1, in 1958. A member of the Redstone rocket family, it was derived from the Jupiter-C sounding rocket. It is commonly confused with the Juno II launch vehicle, which was derived from the PGM-19 Jupiter medium-range ballistic missile."@en . "Retired" . "1.78"^^ . "1958-02-01Z"^^ . . . "3"^^ . . "2.906e+07"^^ .